Twenty-one, also called play21basketball, cutthroat, hustle, tip-it, noyceball, roughhouse, scutter, rough, or rebound[1] is a popular variation of street basketball.
Basic rules are as follows:[2] Typically play begins with one player shooting the ball from a significant distance.
[citation needed] To avoid going over 21, players may choose to miss a free throw intentionally.
Common additional rules include: Twenty-one is frequently used in physical education classes and by basketball team coaches as skill development.
[3][4] Because only one player is on offense at any given time against several defenders, quickness and shooting skills are essential to successful play.